Just in time for trick-or-treating, here are my picks for the scariest stories to ever air on "radio's outstanding theater of thrills." Orson Welles takes a long drive with an uninvited guest in "The Hitch-hiker" (originally aired on CBS on September 2, 1942), and Robert Taylor soon regrets moving into "The House in Cypress Canyon" (originally aired on CBS on December 5, 1946). Ralph Edwards goes on a "Ghost Hunt" (originally aired on CBS on June 23, 1949) and Cary Grant picks a bad spot to run out of gas in "On a Country Road" (originally aired on CBS on November 16, 1950). Finally, Vincent Price faces off against an army of rats in "Three Skeleton Key" (originally aired on CBS on November 11, 1956).